diplobiont

(redirected from diplobiontic)
Also found in: Medical, Encyclopedia.

diplobiont

(ˌdɪpləʊˈbaɪɒnt)
n
(Biology) biology an organism that has both haploid and diploid individuals in its life cycle
ˌdiplobiˈontic adj
References in periodicals archive ?
Diplobiontic: alternating generations present, gametophyte (haploid) and sporophyte (diploid); the sporophyte and gametophyte may be similar (isomorphic), as in Ulva and some Cladophora species (both genera being members of the Chlorophyta), or dissimilar (heteromorphic), as in a species of Bryopsis (Chlorophyta) and in Laminaria (belonging to the Phaeophyta); meiosis is sporic in diplobiontic life cycles.
Since the terms haplobiontic and diplobiontic actually refer to the number of generations in the life cycle and not chromosome number per se, these terms came to be viewed as potentially confusing.
Nitella, Chara) have only a zygotic type of life cycle (are only gametophytes), then consideration should be given to how this rather simple type of life cycle could have been modified into that of a land plant with a diplobiontic life cycle and sporic meiosis.